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A kind of preparation method of automobile brake disc

A technology of automobile brakes and prefabricated bodies, applied in chemical instruments and methods, mechanical equipment, and other chemical processes, can solve the problems of inability to quickly prepare medium-sized and large-scale structural parts, cumbersome process procedures, and corrode carbon fibers, etc., to achieve optimal friction performance and mechanical strength, reduce production cost, and improve the effect of densification efficiency

Active Publication Date: 2021-02-02
XIAN AVIATION BRAKE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the cumbersome process steps in the prior art, the corrosion of carbon fibers by multiple high-temperature molten siliconizing treatments, the adhesion of brake pads during the braking process, and the inability to quickly prepare medium-sized and large-scale structural parts, the present invention introduces an automobile Method for preparing brake discs,

Method used

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  • A kind of preparation method of automobile brake disc
  • A kind of preparation method of automobile brake disc
  • A kind of preparation method of automobile brake disc

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Embodiment Construction

[0058] The invention is a method for preparing an automobile brake disc, and its specific technical scheme is described in detail through three embodiments. The specific process of each embodiment is the same.

[0059] Concrete process of the present invention is:

[0060] Step 1, mixing ingredients.

[0061] A mixture of chopped carbon fiber and modified aminophenolic resin is used as a prepreg, and the mass ratio of chopped carbon fiber to resin is 50%:50%; the ratio is a mass percentage.

[0062] The length of the chopped carbon fiber in the prepreg is divided into two types: 15mm and 30mm, and they are mixed in a ratio of 1:1.

[0063] Step 2, drying.

[0064] Evenly disperse the mixed prepreg on the tray for drying, the drying temperature is 65-75°C, and the drying time is 1-2h.

[0065] Step 3, prepare the prefabricated body of the automobile brake pair

[0066] The automobile brake pair prefabricated body is prepared by adopting the method of pre-compression-compre...

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Abstract

The invention discloses a fabrication method of an automobile brake disc. An automobile brake pair pre-fabricated body is fabricated with carbon fiber prepreg through integrated molding pressing, anda polysilazane solution and a polycarbosilane solution are used as a ceramic precursor; the automobile brake pair pre-fabricated body is fabricated through an integrated molding pressing process, andthe density of the pre-fabricated body is larger than 1.4 g / cm3; a carbon fiber automobile brake pair pre-fabricated part is impregnated through the liquid ceramic precursor; the liquid precursor is subjected to high-temperature pyrolyzing after cross-linking and solidifying are finished and then is converted into a ceramic substrate; and then the impregnation-pyrolysis process is repeated, and finally a carbon fiber reinforced carbon-based / ceramic-based composite material is obtained. The production period is shortened greatly, the production cost is reduced, the densification efficiency is improved, and through adjustment of the impregnation proportion of polycarbosilane and polysilazane, the friction property and mechanical strength of an automobile brake pair can be optimized at the same time.

Description

technical field [0001] The invention relates to the field of manufacturing carbon fiber-reinforced carbon-based / ceramic-based composite materials, and relates to a method for preparing a carbon / ceramic automobile brake disc. Background technique [0002] With the development of modern transportation tools and power machinery towards high speed and high energy load, higher efficiency, higher safety, reliability and harsher environmental adaptability are required for friction materials. The fastest sports car in the world has a top speed of 431km / h. If the brake is forced at this speed, ordinary friction materials will quickly fail. Therefore, it is an urgent need for high-performance and high-reliability friction materials to meet the safe operation of the braking system under high-speed and high-energy load conditions. [0003] There are two ways to brake a car, disc brakes and drum brakes. Because disc brakes have better heat dissipation than drum brakes, they are less pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023F16D2200/0086F16D2200/0091
Inventor 邢少敏郭飞毅李娜李培元雷哲峰
Owner XIAN AVIATION BRAKE TECH
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